Question

A crate of mass 9.6 kg is pulled up a rough incline with an initial speed of 1.52 m/s. The pulling force is 104 N parallel to the incline, which makes an angle of 20.4° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 4.92 m.

(a) How much work is done by the gravitational force on the
crate?

J

(b) Determine the increase in internal energy of the crate–incline
system owing to friction.

J

(c) How much work is done by the 104-N force on the crate?

J

(d) What is the change in kinetic energy of the crate?

J

(e) What is the speed of the crate after being pulled 4.92 m?

m/s

Answer #1

A crate of mass 9.6 kg is pulled up a rough incline with an
initial speed of 1.40 m/s. The pulling force is 98 N parallel to
the incline, which makes an angle of 19.5° with the horizontal. The
coefficient of kinetic friction is 0.400, and the crate is pulled
4.98 m.
(a) How much work is done by the gravitational force on the
crate?
J
(b) Determine the increase in internal energy of the crate–incline
system owing to friction....

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A
55-kg packing crate is pulled with constant speed across a rough
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Part a:
If the tension in the rope is 165 N how much work is done on
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___ J

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If the tension in the rope is 175 N , how much work is done on
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What is the increase in thermal energy of the crate and
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The box has a mass of 3.1 kg and moves a total distance of 2.96 m.
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What is the work done by the gravitational force during this
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A 35 kg trunk is pushed 5.0 m at constant speed up a 30° incline
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